DISCLAIMER: I take no responsibility for damage to your instrument. The name of the game here is 'carefully' and 'gently.' Please take these steps slowly and deliberately. Make sure to read through the whole thing before starting this project.
I was pleased with the outcome even on my first try.... this was my second. I decided to do this because I capo so much that my frets themselves became dented. I also had terrible gouges in the fretboard itself from years of playing. These fretboard gouges do not affect the playability of the guitar, they are just ugly. My first refretting attempt was on a guitar that was already unplayable, so if I messed it up it didn't matter. Happily, it worked fine and I now have an old friend back!
You can obtain fret wire in many different sizes and radius online or at your local guitar repair shop. I made the switch to stainless steel fret wire instead of nickle. Stainless steel is much harder and less likely to wear down and get dents. I used this website. http://www.warmoth.com/supplies/supplies.cfm?fuseaction=fretwire Good luck.